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Nozawa K, Terada M, Onishi M, Ozaki Y, Takano T, Fakhouri W, Novick D, Haro JM, Faris LH, Kawaguchi T, Tanizawa Y, Tsurutani J. Real-world treatment patterns and outcomes of abemaciclib for the treatment of HR + , HER2- metastatic breast cancer patients in Japan. Breast Cancer 2023:10.1007/s12282-023-01461-6. [PMID: 37217763 DOI: 10.1007/s12282-023-01461-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2023] [Accepted: 04/08/2023] [Indexed: 05/24/2023]
Abstract
INTRODUCTION This study described, in routine clinical practice in Japan, the patient characteristics, treatment patterns, and outcomes of female patients with HR + /HER2- metastatic breast cancer (MBC) who started abemaciclib treatment. METHODS Clinical charts were reviewed for patients starting abemaciclib in 12/2018-08/2021 with a minimum of 3 months follow-up data post-abemaciclib initiation regardless of abemaciclib discontinuation. Patient characteristics, treatment patterns, and tumor response were descriptively summarized. Kaplan-Meier curves estimated progression-free survival (PFS). RESULTS 200 patients from 14 institutions were included. At abemaciclib initiation, median age was 59 years, and the Eastern Cooperative Oncology Group performance status score was 0/1/2 for 102/68/5 patients (58.3/38.9/2.9%), respectively. Most had an abemaciclib starting dose of 150 mg (92.5%). The percentage of patients receiving abemaciclib as 1st, 2nd, or 3rd line treatment was 31.5%, 25.8%, and 25.2%, respectively. The most frequent endocrine therapy drugs used with abemaciclib were fulvestrant (59%) and aromatase inhibitors (40%). Evaluation of tumor response was available for 171 patients, 30.4% of whom had complete/partial response. Median PFS was 13.0 months (95% CI 10.1-15.8 months). CONCLUSIONS In a routine clinical practice setting in Japan, patients with HR + , HER2- MBC appear to benefit from abemaciclib treatment in terms of treatment response and median PFS, with the results broadly reflecting the evidence demonstrated in clinical trials.
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Affiliation(s)
- K Nozawa
- Department of Breast Oncology, Aichi Cancer Center Hospital, Nagoya, Japan
| | - M Terada
- Department of Breast Surgery, Graduate School of Medical Sciences, Nagoya City University, Nagoya, Japan
| | - M Onishi
- Department of Medical Oncology, National Cancer Center Hospital, Tokyo, Japan
| | - Y Ozaki
- Department of Breast Medical Oncology, Breast Oncology Center, The Cancer Institute Hospital of the Japanese Foundation for Cancer Research, Tokyo, Japan
| | - T Takano
- Department of Breast Medical Oncology, Breast Oncology Center, The Cancer Institute Hospital of the Japanese Foundation for Cancer Research, Tokyo, Japan
| | - W Fakhouri
- Eli Lilly and Company, Indianapolis, IN, USA
| | - D Novick
- Eli Lilly and Company, Indianapolis, IN, USA
| | - J M Haro
- Parc Sanitari Sant Joan de Déu, Universitat de Barcelona, Sant Boi de Llobregat, Barcelona, Spain
| | - L H Faris
- Parc Sanitari Sant Joan de Déu, Universitat de Barcelona, Sant Boi de Llobregat, Barcelona, Spain
| | - T Kawaguchi
- Eli Lilly and Company, Indianapolis, IN, USA
| | - Y Tanizawa
- Eli Lilly and Company, Indianapolis, IN, USA
| | - Junji Tsurutani
- Advanced Cancer Translational Research Institute, Showa University, Tokyo, Japan.
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Yoshimura A, Nakakami A, Komaki R, Isogai A, Endo Y, Ozaki Y, Nozawa K, Kataoka A, Kotani H, Hattori M, Sawaki M, Iwata H. P289 Retrospective study of pregnancy outcome after breast cancer. Breast 2023. [DOI: 10.1016/s0960-9776(23)00407-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/15/2023] Open
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Endo Y, Kotani H, Nakakami A, Komaki R, Isogai A, Ozaki Y, Nozawa K, Kataoka A, Yoshimura A, Hattori M, Sawaki M, Iwata H. P232 A study to evaluate the safety and utility of targeted axillary dissection using Guiding-Marker System. Breast 2023. [DOI: 10.1016/s0960-9776(23)00350-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/15/2023] Open
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Nozawa K, Suzuki T, Kayanuma G, Yamamoto H, Nagayasu K, Shirakawa H, Kaneko S. Lisinopril prevents bullous pemphigoid induced by dipeptidyl peptidase 4 inhibitors via the Mas receptor pathway. Front Immunol 2023; 13:1084960. [PMID: 36685490 PMCID: PMC9849361 DOI: 10.3389/fimmu.2022.1084960] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2022] [Accepted: 12/05/2022] [Indexed: 01/07/2023] Open
Abstract
Recent studies have suggested that dipeptidyl peptidase 4 (DPP4) inhibitors increase the risk of development of bullous pemphigoid (BP), which is the most common autoimmune blistering skin disease; however, the associated mechanisms remain unclear, and thus far, no therapeutic targets responsible for drug-induced BP have been identified. Therefore, we used clinical data mining to identify candidate drugs that can suppress DPP4 inhibitor-associated BP, and we experimentally examined the underlying molecular mechanisms using human peripheral blood mononuclear cells (hPBMCs). A search of the US Food and Drug Administration Adverse Event Reporting System and the IBM® MarketScan® Research databases indicated that DPP4 inhibitors increased the risk of BP, and that the concomitant use of lisinopril, an angiotensin-converting enzyme inhibitor, significantly decreased the incidence of BP in patients receiving DPP4 inhibitors. Additionally, in vitro experiments with hPBMCs showed that DPP4 inhibitors upregulated mRNA expression of MMP9 and ACE2, which are responsible for the pathophysiology of BP in monocytes/macrophages. Furthermore, lisinopril and Mas receptor (MasR) inhibitors suppressed DPP4 inhibitor-induced upregulation of MMP9. These findings suggest that the modulation of the renin-angiotensin system, especially the angiotensin1-7/MasR axis, is a therapeutic target in DPP4 inhibitor-associated BP.
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Affiliation(s)
- Keisuke Nozawa
- Department of Molecular Pharmacology, Graduate School and Faculty of Pharmaceutical Sciences, Kyoto University, Kyoto, Japan,Biological/Pharmacological Research Laboratories, Central Pharmaceutical Research Institute, Japan Tobacco Inc., Osaka, Japan
| | - Takahide Suzuki
- Department of Molecular Pharmacology, Graduate School and Faculty of Pharmaceutical Sciences, Kyoto University, Kyoto, Japan
| | - Gen Kayanuma
- Department of Molecular Pharmacology, Graduate School and Faculty of Pharmaceutical Sciences, Kyoto University, Kyoto, Japan
| | - Hiroki Yamamoto
- Department of Molecular Pharmacology, Graduate School and Faculty of Pharmaceutical Sciences, Kyoto University, Kyoto, Japan
| | - Kazuki Nagayasu
- Department of Molecular Pharmacology, Graduate School and Faculty of Pharmaceutical Sciences, Kyoto University, Kyoto, Japan
| | - Hisashi Shirakawa
- Department of Molecular Pharmacology, Graduate School and Faculty of Pharmaceutical Sciences, Kyoto University, Kyoto, Japan
| | - Shuji Kaneko
- Department of Molecular Pharmacology, Graduate School and Faculty of Pharmaceutical Sciences, Kyoto University, Kyoto, Japan,*Correspondence: Shuji Kaneko,
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Murata H, Nozawa K, Suzuki T, Kado Y, Suemasu T, Toko K. Si 1-xGe x anode synthesis on plastic films for flexible rechargeable batteries. Sci Rep 2022; 12:13779. [PMID: 35962140 PMCID: PMC9374656 DOI: 10.1038/s41598-022-18072-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2022] [Accepted: 08/04/2022] [Indexed: 11/09/2022] Open
Abstract
SiGe is a promising anode material for replacing graphite in next generation thin-film batteries owing to its high theoretical charge/discharge capacity. Metal-induced layer exchange (LE) is a unique technique used for the low-temperature synthesis of SiGe layers on arbitrary substrates. Here, we demonstrate the synthesis of Si1-xGex (x = 0-1) layers on plastic films using Al-induced LE. The resulting SiGe layers exhibited high electrical conductivity (up to 1200 S cm-1), reflecting the self-organized doping effect of LE. Moreover, the Si1-xGex layer synthesized by the same process was adopted as the anode for the lithium-ion battery. All Si1-xGex anodes showed clear charge/discharge operation and high coulombic efficiency (≥ 97%) after 100 cycles. While the discharge capacities almost reflected the theoretical values at each x at 0.1 C, the capacity degradation with increasing current rate strongly depended on x. Si-rich samples exhibited high initial capacity and low capacity retention, while Ge-rich samples showed contrasting characteristics. In particular, the Si1-xGex layers with x ≥ 0.8 showed excellent current rate performance owing to their high electrical conductivity and low volume expansion, maintaining a high capacity (> 500 mAh g-1) even at a high current rate (10 C). Thus, we revealed the relationship between SiGe composition and anode characteristics for the SiGe layers formed by LE at low temperatures. These results will pave the way for the next generation of flexible batteries based on SiGe anodes.
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Affiliation(s)
- H Murata
- Device Technology Research Institute, National Institute of Advanced Industrial Science and Technology (AIST), 1-1-1 Umezono, Tsukuba, Ibaraki, 305-8568, Japan.
| | - K Nozawa
- Institute of Applied Physics, University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki, 305-8573, Japan
| | - T Suzuki
- Institute of Applied Physics, University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki, 305-8573, Japan
| | - Y Kado
- Energy Process Research Institute, National Institute of Advanced Industrial Science and Technology (AIST), 16-1 Onogawa, Tsukuba, Ibaraki, 305-8569, Japan
| | - T Suemasu
- Institute of Applied Physics, University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki, 305-8573, Japan
| | - K Toko
- Institute of Applied Physics, University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki, 305-8573, Japan.
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Miwa S, Yokota M, Ueyama Y, Maeda K, Ogoshi Y, Seki N, Ogawa N, Nishihata J, Nomura A, Adachi T, Kitao Y, Nozawa K, Ishikawa T, Ukaji Y, Shiozaki M. Discovery of Selective Transforming Growth Factor β Type II Receptor Inhibitors as Antifibrosis Agents. ACS Med Chem Lett 2021; 12:745-751. [PMID: 34055221 DOI: 10.1021/acsmedchemlett.0c00679] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2020] [Accepted: 04/19/2021] [Indexed: 12/20/2022] Open
Abstract
Historically, modulation of transforming growth factor β (TGF-β) signaling has been deemed a rational strategy to treat many disorders, though few successful examples have been reported to date. This difficulty could be partially attributed to the challenges of achieving good specificity over many closely related enzymes that are implicated in distinct phenotypes in organ development and in tissue homeostasis. Recently, fresolimumab and disitertide, two peptidic TGF-β blockers, demonstrated significant therapeutic effects toward human skin fibrosis. Therefore, the selective blockage of TGF-β signaling assures a viable treatment option for fibrotic skin disorders such as systemic sclerosis (SSc). In this report, we disclose selective TGF-β type II receptor (TGF-βRII) inhibitors that exhibited high functional selectivity in cell-based assays. The representative compound 29 attenuated collagen type I alpha 1 chain (COL1A1) expression in a mouse fibrosis model, which suggests that selective inhibition of TGF-βRII-dependent signaling could be a new treatment for fibrotic disorders.
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Affiliation(s)
- Shohei Miwa
- Central Pharmaceutical Research Institute, Japan Tobacco Inc., 1-1 Murasaki-cho, Takatsuki, Osaka 569-1125, Japan
- Division of Material Sciences, Graduate School of Natural Science and Technology, Kanazawa University, Kakuma, Kanazawa 920-1192, Japan
| | - Masahiro Yokota
- Central Pharmaceutical Research Institute, Japan Tobacco Inc., 1-1 Murasaki-cho, Takatsuki, Osaka 569-1125, Japan
| | - Yoshifumi Ueyama
- Central Pharmaceutical Research Institute, Japan Tobacco Inc., 1-1 Murasaki-cho, Takatsuki, Osaka 569-1125, Japan
| | - Katsuya Maeda
- Central Pharmaceutical Research Institute, Japan Tobacco Inc., 1-1 Murasaki-cho, Takatsuki, Osaka 569-1125, Japan
| | - Yosuke Ogoshi
- Central Pharmaceutical Research Institute, Japan Tobacco Inc., 1-1 Murasaki-cho, Takatsuki, Osaka 569-1125, Japan
| | - Noriyoshi Seki
- Central Pharmaceutical Research Institute, Japan Tobacco Inc., 1-1 Murasaki-cho, Takatsuki, Osaka 569-1125, Japan
| | - Naoki Ogawa
- Central Pharmaceutical Research Institute, Japan Tobacco Inc., 1-1 Murasaki-cho, Takatsuki, Osaka 569-1125, Japan
| | - Jun Nishihata
- Central Pharmaceutical Research Institute, Japan Tobacco Inc., 1-1 Murasaki-cho, Takatsuki, Osaka 569-1125, Japan
| | - Akihiro Nomura
- Central Pharmaceutical Research Institute, Japan Tobacco Inc., 1-1 Murasaki-cho, Takatsuki, Osaka 569-1125, Japan
| | - Tsuyoshi Adachi
- Central Pharmaceutical Research Institute, Japan Tobacco Inc., 1-1 Murasaki-cho, Takatsuki, Osaka 569-1125, Japan
| | - Yuki Kitao
- Central Pharmaceutical Research Institute, Japan Tobacco Inc., 1-1 Murasaki-cho, Takatsuki, Osaka 569-1125, Japan
| | - Keisuke Nozawa
- Central Pharmaceutical Research Institute, Japan Tobacco Inc., 1-1 Murasaki-cho, Takatsuki, Osaka 569-1125, Japan
| | - Tomohiro Ishikawa
- Central Pharmaceutical Research Institute, Japan Tobacco Inc., 1-1 Murasaki-cho, Takatsuki, Osaka 569-1125, Japan
| | - Yutaka Ukaji
- Division of Material Sciences, Graduate School of Natural Science and Technology, Kanazawa University, Kakuma, Kanazawa 920-1192, Japan
| | - Makoto Shiozaki
- Central Pharmaceutical Research Institute, Japan Tobacco Inc., 1-1 Murasaki-cho, Takatsuki, Osaka 569-1125, Japan
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Enomoto M, Yamada T, Nakamura M, Ishiyama S, Yokomizo H, Kosugi C, Sonoda H, Ishibashi K, Kuramochi H, Nozawa K, Yoshida Y, Ohta R, Hasegawa S, Ichikawa D, Hashiguchi Y, Hirata K, Katsumata K, Ishida H, Koda K, Sakamoto K. 89P Biomarker analysis of regorafenib dose escalation study (RECC study): A phase II multicenter clinical trial in Japan. Ann Oncol 2020. [DOI: 10.1016/j.annonc.2020.10.109] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
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8
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Matsushita M, Amano H, Nozawa K, Ogasawara M, Tada K, Kempe K, Kusaoi M, Kawamoto T, Minowa K, Ando S, Nemoto T, Abe Y, Hayashi E, Murayama G, Tsukahara T, Yamanaka K, Morimoto S, Yang K, Matsudaira R, Katagiri A, Nakiri Y, Takasaki Y, Yamaji K, Tamura N. FRI0179 A STUDY ON THE ACHIEVEMENT OF LUPUS LOW DISEASE ACTIVITY STATE AND QUALITY OF LIFE IN PATIENTS WITH SYSTEMIC LUPUS ERYTHEMATOSUS: FROM THE JUNTENDO UNIVERSITY SLE PROSPECTIVE REGISTRY STUDY. Ann Rheum Dis 2020. [DOI: 10.1136/annrheumdis-2020-eular.1556] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
Background:Systemic lupus erythematosus (SLE) is a chronic autoimmune disease of unknown etiology that affects mostly young women. Multiorgan complications and prolonged treatment significantly cause physical and mental stress in patients. Improving patients’ quality of life (QOL) in SLE treatment is essential. We examined the treatment effects on disease activity and QOL of SLE patients.Objectives:In recent years, lupus low disease activity state (LLDAS) has been proposed as a treatment target for SLE. Patients who achieve LLDAS have a low recurrence rate for lupus and a low risk of serious complications (1). The aim of this study is to investigate whether achieving LLDAS reduces not only recurrence rate and complications of SLE but also improves patients’ QOL.Methods:A total of 104 SLE patients were enrolled in our prospective SLE registry study (Juntendo, Multi-center, Prospective cohort for investigation of clinical course and outcome in SLE: JUMP) conducted at our institution. SLE was diagnosed using the American College of Rheumatology (ACR) 1982 criteria (revised in 1997). QOL was evaluated using the standard version of the 36-item short form health survey version 2 (SF36v2). Participants were divided into the LLDAS achievement and non-achievement groups, and the characteristics of each group including results of SF36v2 were examined.Results:This study included 104 SLE patients, 94 female and 10 male, and the average age and disease duration were 46.4±13.8 and 14.5±11.3 years, respectively. The average corticosteroid dose was 8.0±17.4 mg/day in terms of prednisolone, and anti-dsDNA antibody titer was 16.8±38.5 IU/ml. Of the 104 patients, 57 achieved LLDAS. The subscale’s standard scoring using SF36v2 for role physical (RP) was 78.9±24.0 and 64.6±27.6 (P<0.01), general health (GH) was 50.0±17.0 and 42.0±19.3 (P<0.05), vitality (VT) was 55.8±15.8 and 38.0±24.1 (P<0.01), social functioning (SF) was 82.0±20.7 and 66.5±26.3 (P<0.01), role emotional (RE) was 89.0±16.1 and 73.4±28.1 (P<0.01), and mental health (MH) was 72.4±15.9 and 58.3±21.8 (P<0.01) in the LLDAS achievement and non-achievement groups, respectively. Furthermore, scoring based on the national standard value in the LLDAS achievement group showed that two categories were >50. However, in the LLDAS non-achievement group, all categories were <50. In particular, RP, GH, VT, SF, RE, and MH of the LLDAS achievement group had significantly higher scores than the LLDAS non-achievement group (RP and GH: p<0.05 and VT, SF, RE and MH: p<0.01).Conclusion:Results of examining the association between LLDAS and QOL using SF36v2 in SLE patients showed that patients who achieved LLDAS had significantly better standard statistical scores in many subscale categories. Thus, LLDAS achievement as a treatment target for SLE patients greatly contributes to improving patients’ QOL.References:[1]Franklyn K, et al. Definition and initial validation of a Lupus Low Disease Activity State (LLDAS).Ann Rheum Dis. 2016 Sep;75(9):1615-21.Disclosure of Interests:None declared
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Yamazaki N, Kikuchi K, Nozawa K, Fukuda H, Shibata T, Hamaguchi T, Takashima A, Shoji H, Boku N, Takatsuka S, Takenouchi T, Nishina T, Hino K, Yoshikawa S, Yamazaki K, Takahashi M, Hasegawa A, Bando H, Masuishi T, Kiyohara Y. Primary analysis results of randomized controlled trial evaluating reactive topical corticosteroid strategies for the facial acneiform rash by EGFR inhibitors (EGFRIs) in patients (pts) with RAS wild-type (wt) metastatic colorectal cancer (mCRC): FAEISS study. Ann Oncol 2019. [DOI: 10.1093/annonc/mdz394.090] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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10
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Noda T, Sakurai N, Nozawa K, Kobayashi S, Devlin DJ, Matzuk MM, Ikawa M. Nine genes abundantly expressed in the epididymis are not essential for male fecundity in mice. Andrology 2019; 7:644-653. [PMID: 30927342 PMCID: PMC6688925 DOI: 10.1111/andr.12621] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2018] [Revised: 01/07/2019] [Accepted: 03/05/2019] [Indexed: 01/14/2023]
Abstract
Background Spermatozoa become competent for fertilization during transit through the epididymis. As spermatozoa from the proximal caudal epididymis can fertilize eggs, proteins from the caput and corpus epididymis are required for sperm maturation. Objectives Microarray analysis identified that more than 17,000 genes are expressed in the epididymis; however, few of these genes demonstrate expression restricted to the epididymis. To analyze epididymis‐enriched gene function in vivo, we generated knockout (KO) mutations in nine genes that are abundantly expressed in the caput and corpus region of the epididymis. Materials and methods KO mice were generated using the CRISPR/Cas9 system. The histology of the epididymis was observed with hematoxylin and eosin staining. KO males were caged with wild‐type females for 3–6 months to check fertility. Results We generated individual mutant mouse lines having indel mutations in Pate1, Pate2, or Pate3. We also deleted the coding regions of Clpsl2, Epp13, and Rnase13, independently. Finally, the 150 kb region encoding Gm1110, Glb1l2, and Glb1l3 was deleted to generate a triple KO mouse line. Histology of the epididymis and sperm morphology of all KO lines were comparable to control males. The females mated with these KO males delivered pups at comparable numbers as control males. Discussion and conclusion We revealed that nine genes abundantly expressed in the caput and corpus epididymis are dispensable for sperm function and male fecundity. CRISPR/Cas9‐mediated KO mice generation accelerates the screening of epididymis‐enriched genes for potential functions in reproduction.
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Affiliation(s)
- T Noda
- Research Institute for Microbial Diseases, Osaka University, Suita, Osaka, Japan
| | - N Sakurai
- Research Institute for Microbial Diseases, Osaka University, Suita, Osaka, Japan
| | - K Nozawa
- Center for Drug Discovery, Baylor College of Medicine, Houston, TX, USA.,Department of Pathology & Immunology, Baylor College of Medicine, Houston, TX, USA
| | - S Kobayashi
- Graduate School of Pharmaceutical Sciences, Osaka University, Suita, Osaka, Japan
| | - D J Devlin
- Center for Drug Discovery, Baylor College of Medicine, Houston, TX, USA.,Department of Pathology & Immunology, Baylor College of Medicine, Houston, TX, USA.,Interdepartmental Program in Translational Biology & Molecular Medicine, Baylor College of Medicine, Houston, TX, USA
| | - M M Matzuk
- Center for Drug Discovery, Baylor College of Medicine, Houston, TX, USA.,Department of Pathology & Immunology, Baylor College of Medicine, Houston, TX, USA.,Department of Molecular and Human Genetics, Baylor College of Medicine, Houston, TX, USA.,Department of Molecular and Cellular Biology, Baylor College of Medicine, Houston, TX, USA.,Department of Pharmacology and Chemical Biology, Baylor College of Medicine, Houston, TX, USA
| | - M Ikawa
- Research Institute for Microbial Diseases, Osaka University, Suita, Osaka, Japan.,Graduate School of Pharmaceutical Sciences, Osaka University, Suita, Osaka, Japan.,Institute of Medical Science, The University of Tokyo, Tokyo, Japan
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kazuhiro S, Sugiyama K, Nozawa K, Funahashi Y, Kogure Y, Kitagawa C, Ichihara S, Nishimura R, Kubota T, Saka H. Single-institute, retrospective study of metastatic uveal melanoma in the immune check point inhibitor era. Ann Oncol 2018. [DOI: 10.1093/annonc/mdy439.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Abstract
A clear correlation between electronic structure and CO2 selectivity for steam reforming of methanol (SRM) was obtained with PdZn, PtZn, NiZn, and PdCd intermetallics on the basis of experiments and calculations. In order to rule out the effects of oxide supports, the intermetallic powders were simply prepared by alloying in an arc furnace followed by crushing in a mortar. PdZn and PdCd exhibit valence electronic densities of states similar to that of Cu and significant chemical shifts (larger than 1 eV) of Pd 3d states with respect to pure Pd, as verified by high-resolution hard X-ray photoelectron spectroscopy (HXPS) measurements and density functional theory (DFT) calculations. Consequently, they show the similar high selectivity of CO2 for the SRM reaction. However, this is not the case for PtZn and NiZn because of the slight differences in their valence electronic structures from that of PdZn. The interval between the Fermi level and the top of the d band is closely related to the selectivity of CO2 for the SRM: the larger the interval is, the higher is the selectivity of CO2. According to DFT calculations for bulk PdZn performed by Chen et al. ( Phys. Rev. B 2003 , 68 , 075417 ), the (111) and (100) surfaces exposing Zn and Pd in an equimolar ratio are more stable than the (001) or (110) surfaces terminated by alternative Zn or Pd layers. First-principles slab calculations for PdZn, PtZn, and NiZn show that bond breaking on the surface leads to a reduction in the d bandwidth but that the d band for stable (111) or (100) surfaces remains essentially unchanged from that of the bulk. It is intriguing that PdZn and PdCd do not contain Cu but show similar valence electronic structure and catalytic selectivity, and hence, a concept is proposed where PdZn and PdCd are regarded as pseudoelements of Cu. The basis of this concept is like electronic structure, like catalysis, which has been demonstrated by experiments and calculations. This is a logical way to enable us to look for new catalysts in which precious metals are partially or completely replaced by base metals. We do not expect that this concept can be applied to all catalytic reactions, but this approach is one of most promising ways to derive a better understanding of the origin of catalytic mechanisms and eventually allow us to design useful catalysts intentionally in the future. This Account reviews the authors' published works on this topic.
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Affiliation(s)
- A. P. Tsai
- Institute
of Multidisciplinary Research for Advanced Materials, Tohoku University, Sendai 980-8577, Japan
- National Institute for Materials Science, Tsukuba 305-0047, Japan
| | - S. Kameoka
- Institute
of Multidisciplinary Research for Advanced Materials, Tohoku University, Sendai 980-8577, Japan
| | - K. Nozawa
- Department
of Physics and Astronomy, Kagoshima University, Kagoshima 890-0065, Japan
| | - M. Shimoda
- National Institute for Materials Science, Tsukuba 305-0047, Japan
| | - Y. Ishii
- Department
of Physics, Chuo University, Tokyo 112-8551, Japan
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Nozawa K, Lin Y, Kubodera R, Shimizu Y, Tanaka H, Ohshima T. Zebrafish Mecp2 is required for proper axonal elongation of motor neurons and synapse formation. Dev Neurobiol 2017; 77:1101-1113. [PMID: 28371371 DOI: 10.1002/dneu.22498] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2016] [Revised: 03/08/2017] [Accepted: 03/23/2017] [Indexed: 12/13/2022]
Abstract
Rett syndrome is a severe neurodevelopmental disorder. It is caused by a mutation in methyl-CpG binding protein 2 (MecP2), a transcriptional regulator that recruits protein complexes involved in histone modification and chromatin remodeling. However, the role of Mecp2 in Rett syndrome remains unclear. In this study, we investigated the function of Mecp2 in neuronal development using zebrafish embryos. Mecp2 expression was detected ubiquitously in the central nervous system and muscles at 28 h postfertilization (hpf). We injected an antisense morpholino oligonucleotide (AMO) to induce Mecp2 knockdown phenotype. In mecp2 morphants (embryos with Mecp2 knockdown by AMO) at 28 and 72 hpf, we found an increase in abnormal axonal branches of caudal primary motor neurons and a decrease in motor activity. In mecp2 morphants at 24 hpf, we observed an increase in the expression of an mecp2 downstream candidate gene, brain derived neurotrophic factor (bdnf). In mecp2 morphants at 72 hpf, the presynaptic area stained by an anti-SV2 antibody was increased at the neuromuscular junction (NMJ). Interestingly, the size of SV2-positive presynaptic area at the NMJ was also increased following bdnf mRNA injection, while it was normalized in a double knockdown of mecp2 and bdnf. These results imply that Mecp2 is an important functional regulator of bdnf gene expression during neural circuit formation in zebrafish embryo. © 2017 Wiley Periodicals, Inc. Develop Neurobiol 77: 1101-1113, 2017.
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Affiliation(s)
- Keisuke Nozawa
- Laboratory for Molecular Brain Science, Department of Life Science and Medical Bioscience, Waseda University, Tokyo, 162-8480, Japan
| | - Yanbin Lin
- Laboratory for Molecular Brain Science, Department of Life Science and Medical Bioscience, Waseda University, Tokyo, 162-8480, Japan
| | - Ryota Kubodera
- Laboratory for Molecular Brain Science, Department of Life Science and Medical Bioscience, Waseda University, Tokyo, 162-8480, Japan
| | - Yuki Shimizu
- Laboratory for Molecular Brain Science, Department of Life Science and Medical Bioscience, Waseda University, Tokyo, 162-8480, Japan
| | - Hideomi Tanaka
- Laboratory for Molecular Brain Science, Department of Life Science and Medical Bioscience, Waseda University, Tokyo, 162-8480, Japan
| | - Toshio Ohshima
- Laboratory for Molecular Brain Science, Department of Life Science and Medical Bioscience, Waseda University, Tokyo, 162-8480, Japan
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Zhang H, Nagaoka K, Usuda K, Nozawa K, Taya K, Yoshida M, Watanabe G. Estrogenic Compounds Impair Primordial Follicle Formation by Inhibiting the Expression of Proapoptotic Hrk in Neonatal Rat Ovary. Biol Reprod 2016; 95:78. [DOI: 10.1095/biolreprod.116.141309] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2016] [Accepted: 07/25/2016] [Indexed: 11/01/2022] Open
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15
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Aida N, Niwa T, Fujii Y, Nozawa K, Enokizono M, Murata K, Obata T. Quiet T1-Weighted Pointwise Encoding Time Reduction with Radial Acquisition for Assessing Myelination in the Pediatric Brain. AJNR Am J Neuroradiol 2016; 37:1528-34. [PMID: 27056422 DOI: 10.3174/ajnr.a4747] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2015] [Accepted: 01/20/2016] [Indexed: 02/01/2023]
Abstract
BACKGROUND AND PURPOSE T1-weighted pointwise encoding time reduction with radial acquisition (PETRA) sequences require limited gradient activity and allow quiet scanning. We aimed to assess the usefulness of PETRA in pediatric brain imaging. MATERIALS AND METHODS We included consecutive pediatric patients who underwent both MPRAGE and PETRA. The contrast-to-noise and contrast ratios between WM and GM were compared in the cerebellar WM, internal capsule, and corpus callosum. The degree of myelination was rated by using 4-point scales at each of these locations plus the subcortical WM in the anterior frontal, anterior temporal, and posterior occipital lobes. Two radiologists made all assessments, and the intra- and interrater agreement was calculated by using intraclass correlation coefficients. Acoustic noise on MPRAGE and PETRA was measured. RESULTS We included 56 patients 5 days to 14 years of age (mean age, 36.6 months) who underwent both MPRAGE and PETRA. The contrast-to-noise and contrast ratios for PETRA were significantly higher than those for MPRAGE (P < .05), excluding the signal ratio for cerebellar WM. Excellent intra- and interrater agreement were obtained for myelination at all locations except the cerebellar WM. The acoustic noise on PETRA (58.2 dB[A]) was much lower than that on MPRAGE (87.4 dB[A]). CONCLUSIONS PETRA generally showed better objective imaging quality without a difference in subjective image-quality evaluation and produced much less acoustic noise compared with MPRAGE. We conclude that PETRA can substitute for MPRAGE in pediatric brain imaging.
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Affiliation(s)
- N Aida
- From the Department of Radiology (N.A., T.N., Y.F., K.N., M.E.), Kanagawa Children's Medical Center, Yokohama, Japan
| | - T Niwa
- From the Department of Radiology (N.A., T.N., Y.F., K.N., M.E.), Kanagawa Children's Medical Center, Yokohama, Japan Department of Radiology (T.N.), Tokai University School of Medicine, Isehara, Japan
| | - Y Fujii
- From the Department of Radiology (N.A., T.N., Y.F., K.N., M.E.), Kanagawa Children's Medical Center, Yokohama, Japan
| | - K Nozawa
- From the Department of Radiology (N.A., T.N., Y.F., K.N., M.E.), Kanagawa Children's Medical Center, Yokohama, Japan
| | - M Enokizono
- From the Department of Radiology (N.A., T.N., Y.F., K.N., M.E.), Kanagawa Children's Medical Center, Yokohama, Japan
| | - K Murata
- Siemens Healthcare K.K. (K.M.), Ohsaki, Tokyo, Japan
| | - T Obata
- Research Center for Charged Particle Therapy (T.O.), National Institute of Radiological Sciences, Chiba, Japan
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16
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Tanimoto A, Shinozaki Y, Nozawa K, Kimoto Y, Amano W, Matsuo A, Yamaguchi T, Matsushita M. Improvement of spontaneous locomotor activity with JAK inhibition by JTE-052 in rat adjuvant-induced arthritis. BMC Musculoskelet Disord 2015; 16:339. [PMID: 26546348 PMCID: PMC4636776 DOI: 10.1186/s12891-015-0802-0] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/05/2015] [Accepted: 11/03/2015] [Indexed: 12/29/2022] Open
Abstract
BACKGROUND Rheumatoid arthritis (RA) is a chronic inflammatory disease that leads to joint destruction, disability, and decreased quality of life (QOL). Inhibition of Janus kinase (JAK) signaling ameliorates articular inflammation and joint destruction in animal models of RA, but its effects on behaviors indicating well-being are poorly understood. In this study, we evaluated the effect of JAK inhibition on spontaneous locomotor activity in rats with adjuvant-induced arthritis, a rodent model of RA. METHODS Arthritis was induced in male Lewis rats by a single subcutaneous injection of Freund's complete adjuvant. The novel JAK inhibitor JTE-052 was orally administered for 7 days after the onset of arthritis. RESULTS Induction of arthritis suppressed the spontaneous locomotor activity of the rats. Administration of JTE-052 completely improved the spontaneous locomotor activity, with partial reductions in articular inflammation and joint destruction. Hyperalgesia and motor functions were also improved, but the efficacy was not complete. However, serum interleukin (IL)-6 levels were completely decreased at 4 h after administration of the first dose of JTE-052. CONCLUSIONS This study demonstrated that JAK inhibition improved the spontaneous locomotor activity of rats with adjuvant-induced arthritis, in association with amelioration of pain and physical dysfunction as a consequence of suppression of joint inflammation. Moreover, although further studies are needed, there was possible participation of IL-6 downregulation in the improvement of locomotor activity by JAK inhibition.
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Affiliation(s)
- Atsuo Tanimoto
- Central Pharmaceutical Research Institute, Japan Tobacco Inc., 1-1 Murasaki-cho, Takatsuki, Osaka, 569-1125, Japan.
| | - Yuichi Shinozaki
- Central Pharmaceutical Research Institute, Japan Tobacco Inc., 1-1 Murasaki-cho, Takatsuki, Osaka, 569-1125, Japan.
| | - Keisuke Nozawa
- Central Pharmaceutical Research Institute, Japan Tobacco Inc., 1-1 Murasaki-cho, Takatsuki, Osaka, 569-1125, Japan.
| | - Yukari Kimoto
- Central Pharmaceutical Research Institute, Japan Tobacco Inc., 1-1 Murasaki-cho, Takatsuki, Osaka, 569-1125, Japan.
| | - Wataru Amano
- Central Pharmaceutical Research Institute, Japan Tobacco Inc., 1-1 Murasaki-cho, Takatsuki, Osaka, 569-1125, Japan.
| | - Akira Matsuo
- Central Pharmaceutical Research Institute, Japan Tobacco Inc., 1-1 Murasaki-cho, Takatsuki, Osaka, 569-1125, Japan.
| | - Takayuki Yamaguchi
- Central Pharmaceutical Research Institute, Japan Tobacco Inc., 1-1 Murasaki-cho, Takatsuki, Osaka, 569-1125, Japan.
| | - Mutsuyoshi Matsushita
- Central Pharmaceutical Research Institute, Japan Tobacco Inc., 1-1 Murasaki-cho, Takatsuki, Osaka, 569-1125, Japan.
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Miyata H, Satouh Y, Mashiko D, Muto M, Nozawa K, Shiba K, Fujihara Y, Isotani A, Inaba K, Ikawa M. Sperm calcineurin inhibition prevents mouse fertility with implications for male contraceptive. Science 2015; 350:442-5. [DOI: 10.1126/science.aad0836] [Citation(s) in RCA: 103] [Impact Index Per Article: 11.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2015] [Accepted: 09/03/2015] [Indexed: 12/28/2022]
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18
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Chiba K, Araseki M, Nozawa K, Furukori K, Araki Y, Matsushima T, Nakaya T, Hata S, Saito Y, Uchida S, Okada Y, Nairn AC, Davis RJ, Yamamoto T, Kinjo M, Taru H, Suzuki T. Quantitative analysis of APP axonal transport in neurons: role of JIP1 in enhanced APP anterograde transport. Mol Biol Cell 2014; 25:3569-80. [PMID: 25165140 PMCID: PMC4230617 DOI: 10.1091/mbc.e14-06-1111] [Citation(s) in RCA: 47] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
APP associates with kinesin-1 via JIP1. In JIP1-decicient neurons, the fast velocity and high frequency of anterograde transport of APP cargo are impaired to reduced velocity and lower frequency, respectively. Interaction of JIP1 with KLC via two novel elements in JIP1 plays an important role in efficient APP axonal transport. Alzheimer's β-amyloid precursor protein (APP) associates with kinesin-1 via JNK-interacting protein 1 (JIP1); however, the role of JIP1 in APP transport by kinesin-1 in neurons remains unclear. We performed a quantitative analysis to understand the role of JIP1 in APP axonal transport. In JIP1-deficient neurons, we find that both the fast velocity (∼2.7 μm/s) and high frequency (66%) of anterograde transport of APP cargo are impaired to a reduced velocity (∼1.83 μm/s) and a lower frequency (45%). We identified two novel elements linked to JIP1 function, located in the central region of JIP1b, that interact with the coiled-coil domain of kinesin light chain 1 (KLC1), in addition to the conventional interaction of the JIP1b 11–amino acid C-terminal (C11) region with the tetratricopeptide repeat of KLC1. High frequency of APP anterograde transport is dependent on one of the novel elements in JIP1b. Fast velocity of APP cargo transport requires the C11 domain, which is regulated by the second novel region of JIP1b. Furthermore, efficient APP axonal transport is not influenced by phosphorylation of APP at Thr-668, a site known to be phosphorylated by JNK. Our quantitative analysis indicates that enhanced fast-velocity and efficient high-frequency APP anterograde transport observed in neurons are mediated by novel roles of JIP1b.
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Affiliation(s)
- Kyoko Chiba
- Laboratory of Neuroscience, Graduate School of Pharmaceutical Sciences, Hokkaido University, Sapporo 060-0812, Japan
| | - Masahiko Araseki
- Laboratory of Neuroscience, Graduate School of Pharmaceutical Sciences, Hokkaido University, Sapporo 060-0812, Japan
| | - Keisuke Nozawa
- Laboratory of Neuroscience, Graduate School of Pharmaceutical Sciences, Hokkaido University, Sapporo 060-0812, Japan
| | - Keiko Furukori
- Laboratory of Neuroscience, Graduate School of Pharmaceutical Sciences, Hokkaido University, Sapporo 060-0812, Japan Department of Psychiatry, Yale University School of Medicine, New Haven, CT 06508
| | - Yoichi Araki
- Laboratory of Neuroscience, Graduate School of Pharmaceutical Sciences, Hokkaido University, Sapporo 060-0812, Japan
| | - Takahide Matsushima
- Laboratory of Neuroscience, Graduate School of Pharmaceutical Sciences, Hokkaido University, Sapporo 060-0812, Japan
| | - Tadashi Nakaya
- Laboratory of Neuroscience, Graduate School of Pharmaceutical Sciences, Hokkaido University, Sapporo 060-0812, Japan
| | - Saori Hata
- Laboratory of Neuroscience, Graduate School of Pharmaceutical Sciences, Hokkaido University, Sapporo 060-0812, Japan
| | - Yuhki Saito
- Laboratory of Neuroscience, Graduate School of Pharmaceutical Sciences, Hokkaido University, Sapporo 060-0812, Japan
| | - Seiichi Uchida
- Human Interface Laboratory, Department of Advanced Information Technology, Faculty of Information Sciences and Electrical Engineering, Kyushu University, Fukuoka 819-0395, Japan
| | - Yasushi Okada
- Laboratory for Cell Polarity Regulation, RIKEN Quantitative Biology Center, Suita 565-0874, Japan
| | - Angus C Nairn
- Department of Psychiatry, Yale University School of Medicine, New Haven, CT 06508
| | - Roger J Davis
- Howard Hughes Medical Institute and Program in Molecular Medicine, University of Massachusetts Medical School, Worcester, MA 01605
| | - Tohru Yamamoto
- Department of Molecular Neurobiology, Faculty of Medicine, Kagawa University, Miki-cho 761-0793, Japan
| | - Masataka Kinjo
- Laboratory of Molecular Cell Dynamics, Faculty of Advanced Life Science, Hokkaido University, Sapporo 001-0021, Japan
| | - Hidenori Taru
- Laboratory of Neuroscience, Graduate School of Pharmaceutical Sciences, Hokkaido University, Sapporo 060-0812, Japan
| | - Toshiharu Suzuki
- Laboratory of Neuroscience, Graduate School of Pharmaceutical Sciences, Hokkaido University, Sapporo 060-0812, Japan
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Sharma HR, Smerdon JA, Nozawa K, Young KM, Yadav TP, Dhanak V, Ishii Y, Shimoda M, Tsai AP, McGrath R. Templated quasicrystalline ordering of single elements and molecules. Acta Crystallogr A Found Adv 2014. [DOI: 10.1107/s2053273314099185] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
Abstract
We have used quasicrystals as templates for the exploration of new epitaxial phenomena. Several interesting results have been observed in the growth on surfaces of the common Al-based quasicrystals [1]. These include pseudomorphic monolayers, quasiperiodically modulated multilayer structures, and fivefold-twinned islands with magic heights influenced by quantum size effects [1]. Here we present our recent works on the growth of various elements and molecules on a new substrate, icosahedral (i) Ag-In-Yb quasicrystal, which have resulted in various epitaxial phenomena not observed previously. The growth of Pb on the five-fold surface of i-Ag-In-Yb yields a film which possesses quasicrystalline ordering in three-dimension [2]. Using scanning tunneling microscopy (STM) and DFT calculations of adsorption energies, we find that lead atoms occupy the positions of atoms in the rhombic triacontahedral (RTH) cluster, the building block of the substrate, and thus grow in layers with different heights and adsorption energies. The adlayer–adlayer interaction is crucial for stabilizing the epitaxial quasicrystalline structure. We will also present the first example of quasicrystalline molecular layers. Pentacene adsorbs at tenfold-symmetric sites of Yb atoms around surface-bisected RTH clusters, yielding quasicrystalline order [3]. Similarly, C-60 growth on the five-fold surface of i-Al-Cu-Fe at elevated temperature produces quasicrystalline layer, where the growth is mediated by Fe atoms on the substrate surface [3]. The finding of quasicrystalline thin films of single elements and molecules opens an avenue for further investigation of the impact of the aperiodic atomic order over periodic order on the physical and chemical properties of materials.
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20
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Doe K, Nozawa K, Hiruma K, Yamada Y, Matsuki Y, Nakano S, Ogasawara M, Nakano H, Ikeda T, Ikegami T, Fujishiro M, Kawasaki M, Ikeda K, Amano H, Morimoto S, Ogawa H, Takamori K, Sekigawa I, Takasaki Y. Antibody against chromatin assembly factor-1 is a novel autoantibody specifically recognized in systemic lupus erythematosus. Lupus 2014; 23:1031-41. [PMID: 24836587 DOI: 10.1177/0961203314536245] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Autoantibodies to proliferating cell nuclear antigen (PCNA) are specifically, if rarely, present in systemic lupus erythematosus (SLE) patient sera. Even SLE patients lacking PCNA reactivity often show reaction to PCNA-binding protein. Here, immunoreactivity to chromatin assembly factor-1 (CAF-1), an essential molecule for DNA replication and a PCNA-binding protein, was compared for the sera of SLE patients, normal healthy controls (NHCs) and other disease controls, and in autoimmune sera reactive to standard autoantigens, by enzyme-linked immunosorbent assay (ELISA), indirect immunofluorescence, and immunoblotting. CAF1 and IRF1 expression in SLE and NHC peripheral mononuclear cells were compared by quantitative real-time polymerase chain reaction. Serum interferon-γ-inducing protein-10 and anti-double-stranded (ds)DNA antibody levels were measured by ELISA. Increased CAF-1 autoimmune reactivity was recognized in SLE or serum anti-dsDNA antibody-positive patients. Significantly greater central nervous system (CNS) involvement (aseptic meningitis) and serum anti-dsDNA antibody titers were present more often in anti-CAF-1 antibody-positive than antibody-negative SLE patients. IFN-γ positively regulated CAF-1 expression in vitro and was associated with anti-CAF-1 antibody production in SLE. Thus, a novel anti-CAF-1 autoantibody is frequently found in patients with SLE and is a useful biomarker for diagnosis, especially in cases with CNS involvement. Aberrant IFN-γ regulation appears to play an important role in anti-CAF-1 antibody production in SLE.
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Affiliation(s)
- K Doe
- Department of Rheumatology, Juntendo University School of Medicine, Tokyo, Japan
| | - K Nozawa
- Department of Rheumatology, Juntendo University School of Medicine, Tokyo, Japan
| | - K Hiruma
- Department of Rheumatology, Juntendo University School of Medicine, Tokyo, Japan
| | - Y Yamada
- Department of Rheumatology, Juntendo University School of Medicine, Tokyo, Japan
| | - Y Matsuki
- Department of Rheumatology, Juntendo University School of Medicine, Tokyo, Japan
| | - S Nakano
- Department of Rheumatology, Juntendo University School of Medicine, Tokyo, Japan
| | - M Ogasawara
- Department of Rheumatology, Juntendo University School of Medicine, Tokyo, Japan
| | - H Nakano
- Laboratory of Molecular and Biochemical Research, Research Support Center, Juntendo University Graduate School of Medicine, Chiba, Japan
| | - T Ikeda
- Laboratory of Molecular and Biochemical Research, Research Support Center, Juntendo University Graduate School of Medicine, Chiba, Japan
| | - T Ikegami
- Laboratory of Molecular and Biochemical Research, Research Support Center, Juntendo University Graduate School of Medicine, Chiba, Japan
| | - M Fujishiro
- Institute for Environment and Gender Specific Medicine, Juntendo University Graduate School of Medicine, Chiba, Japan
| | - M Kawasaki
- Institute for Environment and Gender Specific Medicine, Juntendo University Graduate School of Medicine, Chiba, Japan
| | - K Ikeda
- Institute for Environment and Gender Specific Medicine, Juntendo University Graduate School of Medicine, Chiba, Japan Department of Internal Medicine and Rheumatology, Juntendo University Urayasu Hospital, Chiba, Japan
| | - H Amano
- Department of Rheumatology, Juntendo University School of Medicine, Tokyo, Japan
| | - S Morimoto
- Institute for Environment and Gender Specific Medicine, Juntendo University Graduate School of Medicine, Chiba, Japan Department of Internal Medicine and Rheumatology, Juntendo University Urayasu Hospital, Chiba, Japan
| | - H Ogawa
- Institute for Environment and Gender Specific Medicine, Juntendo University Graduate School of Medicine, Chiba, Japan
| | - K Takamori
- Institute for Environment and Gender Specific Medicine, Juntendo University Graduate School of Medicine, Chiba, Japan
| | - I Sekigawa
- Institute for Environment and Gender Specific Medicine, Juntendo University Graduate School of Medicine, Chiba, Japan Department of Internal Medicine and Rheumatology, Juntendo University Urayasu Hospital, Chiba, Japan
| | - Y Takasaki
- Department of Rheumatology, Juntendo University School of Medicine, Tokyo, Japan
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21
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Morimura R, Nozawa K, Tanaka H, Ohshima T. Phosphorylation of Dpsyl2 (CRMP2) and Dpsyl3 (CRMP4) is required for positioning of caudal primary motor neurons in the zebrafish spinal cord. Dev Neurobiol 2013; 73:911-20. [DOI: 10.1002/dneu.22117] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2013] [Revised: 07/23/2013] [Accepted: 07/28/2013] [Indexed: 11/11/2022]
Affiliation(s)
- Rii Morimura
- Department of Life Science and Medical Bioscience; Waseda University; 2-2 Wakamatsu-cho, Shinjuku-ku Tokyo 162-8480 Japan
| | - Keisuke Nozawa
- Department of Life Science and Medical Bioscience; Waseda University; 2-2 Wakamatsu-cho, Shinjuku-ku Tokyo 162-8480 Japan
| | - Hideomi Tanaka
- Department of Life Science and Medical Bioscience; Waseda University; 2-2 Wakamatsu-cho, Shinjuku-ku Tokyo 162-8480 Japan
- Laboratory for Developmental Gene Regulation; RIKEN Brain Science Institute (BSI); 2-1 Hirosawa, Wako Saitama 351-0198 Japan
| | - Toshio Ohshima
- Department of Life Science and Medical Bioscience; Waseda University; 2-2 Wakamatsu-cho, Shinjuku-ku Tokyo 162-8480 Japan
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22
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Ishihara S, Watanabe T, Fukushima Y, Akahane T, Horiuchi A, Shimada R, Nakamura K, Hayama T, Yamada H, Nozawa K, Matsuda K, Hashiguchi Y. Safety and factors contributing to the difficulty of laparoscopic surgery for rectal cancer treated with preoperative chemoradiotherapy. Tech Coloproctol 2013; 18:247-55. [DOI: 10.1007/s10151-013-1048-1] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/20/2013] [Accepted: 07/02/2013] [Indexed: 01/17/2023]
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23
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Nozawa K, Fujishiro M, Kawasaki M, Yamaguchi A, Ikeda K, Morimoto S, poh-Sing N, Kato Y, Asano M, Sekigawa I, Takasaki Y. SAT0062 Blockade of connective tissue growth factor (CTGF) ameliorates murine model of rheumatoid arthritis. Ann Rheum Dis 2013. [DOI: 10.1136/annrheumdis-2012-eular.3009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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Watanabe Y, Kawahara Y, Hanada D, Nozawa K, Tomoda Y, Kino S. [Examination of the sample centrifugation time for emergency coagulation test]. Rinsho Byori 2012; 60:1035-1039. [PMID: 23383570] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
The rapidity of coagulation testing is important for use as appropriate substitution therapy in patients with, or at risk of critical bleeding requiring massive transfusion. Whereas the ordinary method of coagulation testing is known to be slow, in a critically haemorrhaging patient, a rapid turnaround time of coagulation testing becomes indispensable. To find out if coagulation test results will be affected by a shortened centrifugation time, we measured PT (prothrombin time), APTT (activated partial thromboplastin time), FIB (fibrinogen) and PLT (platelet) in plasma, using different centrifugation times (10 min, 5 min, 3 min), and analyzed the measurements. We found that, whereas centrifugation time significantly affected the PLT count in plasma (10 min; 5.17 +/- 3.71 x 10(3)/microl, 5min; 28. +/- 26.9 x 10(3)/microl, 3min; 63.7 x 10(3)/microl), PT(10min; 14.6 +/- 5.76 sec, 5min; 14.7 +/- 5.84 sec, 3min; 14.9 +/- 6.40 sec), APTT (10min; 36.4 +/- 15.9 sec, 5min; 36.8 +/- 16.5 sec, 3min; 34.7 +/- 11.4 sec) and FIB(10min; 361 +/- 134 mg/dl, 5min; 356 +/- 132 mg/dl, 3min; 356 +/- 125 mg/dl) were not affected. These data suggest that shortening centrifugation time will have no significant effect on the value of PT, APTT and FIB, in an emergency situation.
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Affiliation(s)
- Yumi Watanabe
- Department of Medical Laboratory and Blood Center, Asahikawa Medical College Hospital, Asahikawa 078-8510, Japan.
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Lin BZ, Odahara S, Ishida M, Kato T, Sasazaki S, Nozawa K, Mannen H. Molecular phylogeography and genetic diversity of East Asian goats. Anim Genet 2012; 44:79-85. [PMID: 22524237 DOI: 10.1111/j.1365-2052.2012.02358.x] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 01/23/2012] [Indexed: 11/28/2022]
Abstract
The domestic goat is one of the most important livestock species, but its origins and genetic diversity still remain uncertain. Multiple highly divergent maternal lineages of goat have been reported in previous studies. Although one of the mitochondrial DNA lineages, lineage B, was detected only in eastern and southern Asia, the geographic distribution of these lineages was previously unclear. Here, we examine the genetic diversity and phylogeographic structure of Asian goats by mitochondrial DNA sequences and morphological characteristics. The analyses of a total of 1661 Asian goats from 12 countries revealed a high frequency of lineage B in Southeast Asia. The frequency of this lineage tended to be higher in mountain areas than in plain areas in Southeast Asian countries, and there was a significant correlation between its frequency and morphological traits. The results suggest an original predominance of lineage B in Southeast Asia and the recent infiltration of lineage A into Southeast Asian goats.
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Affiliation(s)
- B Z Lin
- Laboratory of Animal Breeding and Genetics, Graduate School of Agricultural Science, Kobe University, Kobe, 657-8501, Japan
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Kawasaki M, Fujishiro M, Yamaguchi A, Nozawa K, Kaneko H, Takasaki Y, Takamori K, Ogawa H, Sekigawa I. Possible role of the JAK/STAT pathways in the regulation of T cell-interferon related genes in systemic lupus erythematosus. Lupus 2012; 20:1231-9. [PMID: 21980035 DOI: 10.1177/0961203311409963] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
Changes in gene expression in CD3+ T cells associated with disease progression in systemic lupus erythematosus (SLE) patients were determined. The genes related to SLE disease-related activities were identified and their gene regulatory networks were investigated. Analyses of gene expression were performed by both DNA microarray and real-time quantitative reverse transcription polymerase chain reaction (qRT-PCR). The expression of certain genes including interferon (IFN) regulatory factor (IRF)-related genes, such as IFN-regulated, -related, and -signature genes was increased in the active phase of SLE. Pathway network analyses suggested that these IRF-related genes are regulated through the Janus kinase/signal transducer and activator of transcription (JAK/STAT) pathway. JAK/STAT pathway-mediated regulation of IRF-related genes may have an important role in the disease activity of SLE. Inhibitors of JAK/STAT cascade may be useful as therapeutic agents.
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Affiliation(s)
- M Kawasaki
- Institute for Environmental and Gender Specific Medicine, Juntendo University Graduate School of Medicine, Chiba, Japan
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27
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Fujishiro M, Yamaguchi A, Kawasaki M, Nozawa K, Takasaki Y, Takamori K, Ogawa H, Endo K, Ng PS, Takehara K, Sekigawa I. The detection of plasma levels of connective tissue growth factor in rheumatoid arthritis patients. Clin Exp Rheumatol 2012; 30:145-146. [PMID: 22244584] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2011] [Accepted: 09/06/2011] [Indexed: 05/31/2023]
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28
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Tanaka N, Nozawa K, Shimoda M, Ishii Y. Simulated STM images for surface of Ag-In-Yb cubic approximant. Acta Crystallogr A 2011. [DOI: 10.1107/s010876731108408x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
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Nozawa K, Ishii Y. Theoretical study for pseudomorphic growth on Ag-In-Yb quasicrystal surface. Acta Crystallogr A 2011. [DOI: 10.1107/s0108767311084091] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
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Chiba K, Nozawa K, Araseki M, Kinjo M, Taru H, Suzuki T. P3‐145: Molecular mechanism of JIP1b‐mediated APP association to kinesin‐1 in APP transport and metabolic regulation. Alzheimers Dement 2011. [DOI: 10.1016/j.jalz.2011.05.1585] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
Affiliation(s)
- Kyoko Chiba
- Laboratory of Neuroscience, Graduate School of Pharmaceutical SciencesHokkaido UniversitySapporoJapan
| | - Keisuke Nozawa
- Laboratory of Neuroscience, Graduate School of Pharmaceutical SciencesHokkaido UniversitySapporoJapan
| | - Masahiko Araseki
- Laboratory of Neuroscience, Graduate School of Pharmaceutical SciencesHokkaido UniversitySapporoJapan
| | - Masataka Kinjo
- Laboratory of Molecular Cell Dynamics, Faculty of Advance of Life ScienceHokkaido UniversitySapporoJapan
| | - Hidenori Taru
- Creative Research Institute Sousei, Hokkaido University and Laboratory of Neuronal Cell Biology, Graduate School of Pharmaceutical SciencesHokkaido UniversitySapporoJapan
| | - Toshiharu Suzuki
- Laboratory of Neuroscience, Graduate School of Pharmaceutical SciencesHokkaido UniversitySapporoJapan
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Maeda K, Takano J, Ikeda Y, Fujita T, Oyama Y, Nozawa K, Kumagai Y, Sugiyama Y. Nonlinear Pharmacokinetics of Oral Quinidine and Verapamil in Healthy Subjects: A Clinical Microdosing Study. Clin Pharmacol Ther 2011; 90:263-70. [DOI: 10.1038/clpt.2011.108] [Citation(s) in RCA: 40] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Ishii Y, Nozawa K, Fujiwara T. Chemical Bonding and Pseudogap in Zn- and Cd-based Compounds with Complex Hexagonal Structures. ACTA ACUST UNITED AC 2011. [DOI: 10.1557/proc-805-ll4.2] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
ABSTRACTElectronic structures of hexagonal Zn-Mg-Y and Cd58Y13 compounds are studied by first-principles calculations. Both of the systems show deep pseudogap in the electronic density of states near the Fermi level and considered to be stabilized electronically. To illustrate bonding nature of electronic wavefunctions, the crystal orbital Hamilton population (COHP) is calculated for neighboring pairs of atoms in the unit cell. It is found that the bonding nature is changed from bonding to anti-bonding almost exactly at the Fermi level for Zn-Zn and Cd-Cd bonds. On the contrary, for Zn/Cd-Y bonds, both of the states below and above the pseudogap behave as bonding ones. Possible effects of the p-d hybridization are discussed.
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Yamada H, Matsuda K, Akahane T, Shimada R, Horiuchi A, Shibuya H, Aoyagi Y, Nakamura K, Hayama T, Iinuma H, Nozawa K, Ishihara S, Watanabe T. A case of fulminant amebic colitis with multiple large intestinal perforations. Int Surg 2010; 95:356-359. [PMID: 21309421] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/30/2023] Open
Abstract
Amebic colitis normally causes mucous and bloody diarrhea stool as predominant symptoms, thus leading to a course of chronic colitis. However, though rare, there exists a fulminating type that causes intestinal perforations due to wide necrosis of the large intestine. We encountered a case of fulminant amebic colitis that lead to death due to multiple large intestinal perforations. The patient was a 72-year-old female. The patient was admitted to our hospital with symptoms of fever, abdominal pain, and diarrhea. She continued to have a fever of over 38 degrees C and increased left abdominal pain. An abdominal computed tomography scan revealed free gas on the abdominal side of the kidney. Therefore, gastrointestinal perforations were diagnosed and surgery was performed. In surgery, many perforated parts were observed from the appendix to the descending colon, and subtotal colectomy was performed. However, sepsis and disseminated intravascular coagulation occurred, and the patient died on the eighth postoperative day.
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Affiliation(s)
- H Yamada
- Department of Surgery, Teikyo University School of Medicine, Tokyo, Japan
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Shimizu C, Nozawa K, Yamamoto S, Kakimoto M, Takahashi Y, Ito A, Izumi H, Fujiwara Y. A prospective study of the appearance-related side effects (ARSE) in 638 Japanese patients receiving cancer chemotherapy. J Clin Oncol 2010. [DOI: 10.1200/jco.2010.28.15_suppl.e19516] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
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Tsuzuki Y, Nozawa K, Ashizawa K. The Effect of the Addition and Removal of Various Cryoprotectants on the Nuclear Maturation and ATP Content of Immature Porcine Oocytes. Asian Australas J Anim Sci 2009. [DOI: 10.5713/ajas.2009.80292] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Kawasaki M, Sekigawa I, Nozawa K, Kaneko H, Takasaki Y, Takamori K, Ogawa H. Changes in the gene expression of peripheral blood mononuclear cells during the menstrual cycle of females is associated with a gender bias in the incidence of systemic lupus erythematosus. Clin Exp Rheumatol 2009; 27:260-266. [PMID: 19473566] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
OBJECTIVE The incidence of systemic lupus erythematosus (SLE) is far higher in females than in males and the onset and/or disease activity is influenced by pregnancy and the menstrual cycle. Sex hormones seem to influence the pathogenesis of SLE, therefore, changes in gene expression in peripheral blood mononuclear cells (PBMC) were examined during the menstrual cycle in females, under the comparison of gene expression of patients with SLE. METHODS The detection and a quantitative analysis of the gene expression was performed by DNA microarray or real-time quantitative polymerase chain reaction (RQ-PCR) method. RESULTS There were thirteen known genes which showed significant quantitative changes during the menstrual cycles of females, but not in males. Among these genes, statistical quantitative differences between normal controls and SLE patients were observed in six genes. CONCLUSION Based on these findings, certain genes (such as the tumor necrosis factor receptor superfamily, member 14; TNFRSF14, and signal regulatory protein, gamma; SIRPG) appear to contribute to gender difference of SLE.
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Affiliation(s)
- M Kawasaki
- Institute for Environment and Gender Specific Medicine, Juntendo University Graduate School of Medicine, Chiba, Japan
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Komagata S, Hirota K, Arii S, Kanazawa I, Fukutani K, Nozawa K, Komori F. Disordered state of adsorbed hydrogens on Ni(111) surface studied by slow-positron beam. SURF INTERFACE ANAL 2008. [DOI: 10.1002/sia.2898] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Nureki O, Nozawa K, Araiso Y, Soll D, Ishitani R. Stop codon recoding mechanism revealed by the suppressor tRNAPyl/PylS complex structure. Acta Crystallogr A 2008. [DOI: 10.1107/s0108767308099224] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/03/2023] Open
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Kawamoto Y, Kawamoto S, Matsubayashi K, Nozawa K, Watanabe T, Stanley MA, Perwitasari-Farajallah D. Genetic diversity of longtail macaques (Macaca fascicularis) on the island of Mauritius: an assessment of nuclear and mitochondrial DNA polymorphisms. J Med Primatol 2008; 37:45-54. [PMID: 18199072 DOI: 10.1111/j.1600-0684.2007.00225.x] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
BACKGROUND Individuals from an introduced population of longtail macaques on Mauritius have been extensively used in recent research. This population has low MHC gene diversity, and is thus regarded as a valuable resource for research. METHODS We investigated the genetic diversity of this population using multiple molecular markers located in mitochondrial DNA and microsatellite DNA loci on the autosomes and the Y chromosome. We tested samples from 82 individuals taken from seven study sites. RESULTS AND CONCLUSIONS We found this population to be panmictic, with a low degree of genetic variability. On the basis of an mtDNA phylogeny, we inferred that these macaques' ancestors originated from Java in Asia. Weak gametic disequilibrium was observed, suggesting decay of non-random associations between genomic genes at the time of founding. The results suggest that macaques bred in Mauritius are valuable as model animals for biomedical research because of their genetic homogeneity.
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Affiliation(s)
- Y Kawamoto
- Primate Research Institute, Kyoto University, Aichi, Japan.
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Sakaguchi M, Takezawa M, Nakazawa R, Nozawa K, Kusakawa T, Nagasawa T, Sugahara Y, Kawakita M. Role of Disulphide Bonds in a Thermophilic Serine Protease Aqualysin I from Thermus aquaticus YT-1. J Biochem 2008; 143:625-32. [DOI: 10.1093/jb/mvn007] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
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Nakano S, Morimoto S, Suzuki J, Nozawa K, Amano H, Tokano Y, Takasaki Y. Role of pathogenic auto-antibody production by Toll-like receptor 9 of B cells in active systemic lupus erythematosus. Rheumatology (Oxford) 2007; 47:145-9. [PMID: 18160420 DOI: 10.1093/rheumatology/kem327] [Citation(s) in RCA: 63] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
OBJECTIVES Toll-like receptor 9 (TLR9) is a pattern-associated receptor functioning in innate immunity that may be involved in the recognition of self-antigens and the production of pathogenic auto-antibodies. Therefore, we examined the expression of TLR9 in systemic lupus erythematosus (SLE) to determine whether TLR9 is involved in the production of pathogenic auto-antibodies. METHODS B cells were collected from patients with active SLE, and subjected to analysis of the TLR9 molecule using flow cytometry fluorescence activated cell sorting (FACS) and TLR9 mRNA by reverse-transcriptase polymerase chain reaction. SLE B cells were stimulated with CpG-ODN, and subsequent cytokine and anti-dsDNA antibody production was measured by enzyme-linked immunosorbent assay. RESULTS The expression and mRNA level of TLR9 on B cells was up-regulated in SLE patients, and SLE disease activity index (SLEDAI) and CH50 were correlated with TLR9 expression on CD20+ B cells. Moreover, TLR9-CpG interaction enhanced the production of anti-dsDNA antibody and IL-10. CONCLUSIONS The present study demonstrated that higher expression of TLR9 on peripheral blood B cells from patients with active SLE was significantly correlated with CH50 and SLEDAI to TLR9, and induced the production of anti-dsDNA antibody and IL-10 by TLR9-CpG ligation. These results suggest that an abnormality of innate immunity plays a crucial role in the pathology of SLE, and that blockade of CpG-TLR9 interaction may be a new therapeutic approach for SLE.
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Affiliation(s)
- S Nakano
- Department of Rheumatology and Internal Medicine, Juntendo University School of Medicine, 2-1-1 Hongo, Bunkyo-Ku, Tokyo 113-8421, Japan.
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Hirota K, Osawa M, Suzuki H, Oishi Y, Kanazawa I, Fukutani K, Nozawa K, Komori F. Adsorbed hydrogen on Ni(111) surface studied by slow positron beam. ACTA ACUST UNITED AC 2007. [DOI: 10.1002/pssc.200675862] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Fukuda S, Ishikawa M, Ochiai N, Suzuki Y, Sunaga J, Shinohara N, Nozawa K, Tsuda F, Takahashi M, Okamoto H. Unchanged high prevalence of antibodies to hepatitis E virus (HEV) and HEV RNA among blood donors with an elevated alanine aminotransferase level in Japan during 1991-2006. Arch Virol 2007; 152:1623-35. [PMID: 17533550 DOI: 10.1007/s00705-007-0996-z] [Citation(s) in RCA: 33] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2007] [Accepted: 05/02/2007] [Indexed: 12/28/2022]
Abstract
Hepatitis E is rare in Japan but is occurring more frequently than previously thought. To investigate whether de novo subclinical infection of hepatitis E virus (HEV) has recently increased in Japan, HEV RNA was assayed in serum samples obtained from 4019 Japanese voluntary blood donors with alanine aminotransferase (ALT) of > or =61 IU/l, who are likely to have ongoing HEV infection, during 1991-2006. The overall rates of IgG-class antibody to HEV (anti-HEV IgG), anti-HEV IgM/IgA and HEV RNA among 3185 donors in 2004-2006 were comparable with those among 594 donors in 1998 (5.3 vs. 5.2%, 0.2 vs. 0.5%, and 0.2 vs. 0.3%, respectively). Among blood donors with ALT > or = 201 IU/l in three groups according to the year of blood collection (1991-1995 [n = 156], 1996-1999 [n = 116] and 2004-2006 [n = 61]), there were no appreciable differences in the prevalence of anti-HEV IgG (5.8, 4.3, and 6.6%, respectively), anti-HEV IgM/IgA (1.9, 3.4, and 3.3%, respectively) and HEV RNA (1.3, 3.4, and 3.3%, respectively). The eleven HEV isolates obtained in the present study differed from each other by 1.7-22.8% in the ORF2 sequence and segregated into genotype 3 or 4. The occurrence rate of subclinical infection with divergent HEV strains has essentially remained unchanged during 1991-2006 in Japan.
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Affiliation(s)
- S Fukuda
- Japanese Red Cross Tochigi Blood Center, Tochigi, Japan
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Morimoto S, Nakano S, Watanabe T, Tamayama Y, Mitsuo A, Nakiri Y, Suzuki J, Nozawa K, Amano H, Tokano Y, Kobata T, Takasaki Y. Expression of B-cell activating factor of the tumour necrosis factor family (BAFF) in T cells in active systemic lupus erythematosus: the role of BAFF in T cell-dependent B cell pathogenic autoantibody production. Rheumatology (Oxford) 2007; 46:1083-6. [PMID: 17500077 DOI: 10.1093/rheumatology/kem097] [Citation(s) in RCA: 58] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
OBJECTIVES To determine whether B cell activating factor of the tumour necrosis factor family (BAFF) is involved in T cell-dependent B cell pathogenic autoantibody production in systemic lupus erythematosus (SLE). METHODS Peripheral blood mononuclear cells (PBMCs) from 23 SLE patients were analysed by flow cytometry to examine the intracellular expression of BAFF in CD4+ and CD8+ T cells and the surface expression of BAFF-receptor (R) and TACI on CD20+ B cells. Moreover, peripheral blood was used to determine the level of BAFF messenger RNA (mRNA) in CD4+ and CD8+ T cells and the level of BAFF-R mRNA in CD20+ B cells. Blocking of BAFF function with TACI-Ig measured anti-double-stranded DNA (dsDNA) antibodies by enzyme-linked immunosorbent assay (ELISA). RESULTS CD4+ and CD8+ T cells from patients with active SLE expressed intracellular BAFF whereas those from normal subjects did not. BAFF-R and TACI were expressed on B cells from both normal controls and patients with active SLE and there was no significant difference. CD4+ and CD8+ T cells from SLE patients expressed BAFF mRNA whereas those from normal controls did not. Expression of BAFF-R mRNA in CD20+ B cells showed no significant difference between SLE patients and normal controls. TACI-Ig suppressed spontaneous in vitro T cell-dependent B cell anti-dsDNA antibodies production on active SLE with kidney involvement. CONCLUSIONS BAFF may play a pathogenic role in SLE by stimulating T cell-dependent B cell autoantibodies production. Blockade of BAFF is a promising therapeutic approach for SLE especially in patients with kidney involvement.
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Affiliation(s)
- S Morimoto
- Department of Internal Medicine and Rheumatology, Juntendo University School of Medicine, Bunkyo-ku, Tokyo 113-8421, Japan.
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Kanazawa I, Oishi Y, Hirota K, Fukutani K, Nozawa K, Komori F. Adsorbed hydrogens and their behavior on Ni(111) surface studied by slow-positron beam. SURF INTERFACE ANAL 2006. [DOI: 10.1002/sia.2438] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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